公开(公告)号：US4341689A

公开(公告)日：1982-07-27

申请号：US279821

申请日：1981-07-02

申请人： Jyotindra K. Doshi ,  Scott A. Wallenberg

发明人： Jyotindra K. Doshi ,  Scott A. Wallenberg

IPC分类号： C08G18/16 ,  C08G18/20 ,  C08G18/18

CPC分类号： C08G18/16 ,  C08G18/20

摘要： A two component polyurethane coating system is disclosed in which the pot life is extended while retaining rapid cure. The system employs a first component which is a solution of a soluble resin containing active hydrogen atoms capable of reacting with isocyanate functionality, and said first component has dispersed therein an amine catalyst for the reaction absorbed in a molecular sieve having a pore size large enough to absorb the amine catalyst. The molecular sieve minimizes the catalytic effect of the amine catalyst when the two components are mixed until after the absorption of atmospheric moisture forces the sieve to release the catalyst to speed the cure. The second component comprises a solution of an organic polyisocyanate, this solution containing an organotin accelerator which has been deactivated with acetic acid or formic acid which minimizes the accelerating effect of the accelerator when the two components are mixed until after vaporization of the acid frees the accelerator to speed the cure.

摘要翻译： 公开了一种双组分聚氨酯涂料体系，其中适用期延长，同时保持快速固化。 该系统采用第一组分，其是含有能够与异氰酸酯官能团反应的活性氢原子的可溶性树脂的溶液，并且所述第一组分在其中分散有用于反应的胺催化剂，所述催化剂被吸收在孔径足够大的分子筛中 吸收胺催化剂。 分子筛最小化胺催化剂的催化效果，当两种组分混合直到吸收大气中的水分强迫筛子释放催化剂以加速固化。 第二组分包括有机多异氰酸酯溶液，该溶液含有已经用乙酸或甲酸失活的有机锡加速剂，当两种组分混合直到酸汽化之后，促进剂的加速作用最小化促使加速剂释放 加速治愈。